08b sex & copulation

08b sex & copulation - sexual status) Batemans...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Bateman’s Predictions …of universal sex differences in behavior: M promiscuity vs. F monandry M sexual ardor vs. F sexual passivity   indiscriminate M vs. discriminating F   paternal disinvestment vs. maternal care
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Female Advertisement: Sex Swellings *  7% (25 spp) of primates have    conspicuous mid-cycle swellings *  indicate probability of ovulation  (imprecise cue) *  costly to the female    (14-25% weight increase) *  MM prefer to mate with FF with larger swellings *   promote sexual activity
Background image of page 2
Eviction:  Adult FF maintain reproductive privileges by  social unit.  Scentmarking:
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
Background image of page 9
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: sexual status) Batemans Other Data (1948) males 2 1 3 4 2 1 3 4 Relative fertility Number of mates females Female Promiscuity * multiple mating (with >1 M) * preference for certain MM (novelty, familiarity, status) * indiscriminate mating * repeated mating (>1X per partner) * copulation outside fertile period (nonprocreative) challenges F choice Genital Lock Initial phase of coitus Locking phase of coitus Copulatory Patterns Mounting: Suspended Leg lock Double foot clasp Intromission: Genital locks (vs. functional locks in canids) Ejaculation Pelvic thrusting (norm) Single prolonged (SPI) vs. multiple brief (MBI) Single vs. multiple Male Orgasm Female Orgasm...
View Full Document

Page1 / 9

08b sex & copulation - sexual status) Batemans...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online